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2009 46th ACM/IEEE Design Automation Conference, DAC 2009

作者： Samii, Soheil Eles, Petru Zebo, Peng Cervin, Anton Dept. of Computer and Information Science Linköping University Linköping Sweden Dept. of Automatic Control Lund University Lund Sweden

ISBN: (纸本)9781605584973

At runtime, an embedded control system can switch between alternative functional modes. In each mode, the system operates by using a schedule and controllers that exploit the available computation and communication resources to optimize the control performance in the running mode. The number of modes is usually exponential in the number of control loops, which means that all controllers and schedules cannot be produced in affordable design-time and stored in memory. This paper addresses synthesis of multi-mode embedded control systems. Our contribution is a method that trades control quality with optimization time, and that efficiently selects the schedules and controllers to be synthesized and stored in memory. Copyright 2009 ACM.

关键词： controllers

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The challenge of cloud control 8

The challenge of cloud control

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8th International Workshop on Feedback Computing

作者： Kihl, Maria Elmroth, Erik Tordsson, Johan Årzén, Karl Erik Robertsson, Anders Dept. of Electrical and Information Technology Lund University Sweden Dept. of Computer Science Umeå University Sweden Dept of Automatic Control Lund University Sweden

Today's cloud data center infrastructures are not even near being able to cope with the enormous and rapidly varying capacity demands that will be reality in a near future. So far, very little is understood about how to transform today's data centers (being large, power-hungry facilities, and operated through heroic efforts by numerous administrators) into a self-managed, dynamic, and dependable infrastructure, constantly delivering expected QoS with reasonable operation costs and acceptable carbon footprint for large-scale services with sometimes dramatic variations in capacity demands. In this paper, we discuss some of the major challenges for resource-optimized cloud data center. We propose a new research area called Cloud control, which is a control theoretic approach to a range of cloud management problems, aiming to transform todaýs static and energy consuming cloud data centers into self-managed, dynamic, and dependable infrastructures, constantly delivering expected quality of service with acceptable operation costs and carbon footprint for large-scale services with varying capacity demands. © 8th International Workshop on Feedback Computing 2013. All rights reserved.

关键词： Carbon footprint

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Towards a Holistic controller: Reinforcement Learning for Data Center control 21

Towards a Holistic Controller: Reinforcement Learning for Da...

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12th ACM International Conference on Future Energy Systems, e-Energy 2021

作者： Heimerson, Albin Brännvall, Rickard Sjölund, Johannes Eker, Johan Gustafsson, Jonas Lund University Dept. of Automatic Control Sweden Rise Research Institutes of Sweden Dept. of Computer Science Sweden Ericsson Research Lund University Sweden

ISBN: (纸本)9781450383332

The increased use of cloud and other large scale datacenter IT services and the associated power usage has put the spotlight on more energy-efficient datacenter management. In this paper, a simple model was developed to represent the heat rejection system and energy usage in a small DC setup. The model was then controlled by a reinforcement learning agent that handles both the load balancing of the IT workload, as well as cooling system setpoints. The main contribution is the holistic approach to datacenter control where both facility metrics, IT hardware metric and cloud service logs are used as inputs. The application of reinforcement learning in the proposed holistic setup is feasible and achieves results that outperform standard algorithms. The paper presents both the simplified DC model and the reinforcement learning agent in detail and discusses how this work can be extended towards a richer datacenter model. © 2021 ACM.

关键词： Reinforcement learning

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On the integration of skilled robot motions for productivity in manufacturing

On the integration of skilled robot motions for productivity...

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IEEE International Symposium on Assembly and Manufacturing

作者： Bjorkelund, Anders Edstrom, Lisett Haage, Mathias Malec, Jacek Nilsson, Klas Nugues, Pierre Robertz, Sven Gestegard Storkle, Denis Blomdell, Anders Johansson, Rolf Linderoth, Magnus Nilsson, Anders Robertsson, Anders Stolt, Andreas Bruyninckx, Herman Dept. of Computer Science Lund University Sweden Dept of Automatic Control Lund University Sweden Dept. of Mechanical Engineering K.U. Leuven Belgium

ISBN: (纸本)9781612843438

Robots used in manufacturing today are tailored to their tasks by system integration based on expert knowledge concerning both production and machine control. For upcoming new generations of even more flexible robot solutions, in applications such as dexterous assembly, the robot setup and programming gets even more challenging. Reuse of solutions in terms of parameters, controls, process tuning, and of software modules in general then gets increasingly important. There has been valuable progress within reuse of automation solutions when machines comply with standards and behave according to nominal models. However, more flexible robots with sensor-based manipulation skills and cognitive functions for human interaction are far too complex to manage, and solutions are rarely reusable since knowledge is either implicit in imperative software or not captured in machine readable form. We propose techniques that build on existing knowledge by converting structured data into an RDF-based knowledge base. By enhancements of industrial control systems and available engineering tools, such knowledge can be gradually extended as part of the interaction during the definition of the robot task. © 2011 IEEE.

关键词： Manufacture

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A framework for feature selection for background subtraction

A framework for feature selection for background subtraction

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2006 IEEE computer Society Conference on computer Vision and Pattern Recognition, CVPR 2006

作者： Parag, Toufiq Elgammal, Ahmed Mittal, Anurag Dept. of Computer Science Rutgers University Piscataway NJ 08854 Real-time Vision and Modeling Dept. Siemens Corporate Research Princeton NJ 08540 Dept. of Computer Science and Automatic Control University of Alexandria Egypt Dept. of Computer Science and Engg IIT Madras Chennai India

ISBN: (纸本)0769525970

Background subtraction is a widely used paradigm to detect moving objects in video taken from a static camera and is used for various important applications such as video surveillance, human motion analysis, etc. Various statistical approaches have been proposed for modeling a given scene background. However, there is no theoretical framework for choosing which features to use to model different regions of the scene background. In this paper we introduce a novel framework for feature selection for background modeling and subtraction. A boosting algorithm, namely RealBoost, is used to choose the best combination of features at each pixel. Given the probability estimates from a pool of features calculated by Kernel Density Estimate (KDE) over a certain time period, the algorithm selects the most useful ones to discriminate foreground objects from the scene background. The results show that the proposed framework successfully selects appropriate features for different parts of the image. © 2006 IEEE.

关键词： Object recognition

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A SCORM based package model for WebLabs 44

A SCORM based package model for WebLabs

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44th Annual Frontiers in Education Conference, FIE 2014

作者： Ruano-Ruano, Ildefonso Gámez-García, Javier Bencomo, Sebastián Dormido Ortega, Juan Gómez GRAV Group University of Jaén Jaén Spain Dept. of Computer Science and Automatic Control UNED Madrid Spain

ISBN: (纸本)9781479939213

Web Laboratories (WebLabs) are essential resources for engineering education. Within this type of laboratory, a new Sharable Content Object Reference Model (SCORM) package design model is shown in this work. The proposed model is based on a set of resources that form a complete educational structure;taking into account the sequencing and navigation among the elements that compose it. In addition, it can be uploaded to a Learning Management System (LMS), offering to the students an effective tool to work with web labs. The package is structured in 4 sections or pages: Introduction, Theory, Virtual/Remote Laboratory (VRL) and Assessment;where the last performs an automated verification of the work done by the learner. In this way, one of the advantage of this methodology is that the instant results of the assessments, performed by the SCORM package, is stored in the inner LMS. Some WebLabs performing this methodology are being developed in the University of Jaén. In this work, an example is developed: 'Modelling of Dynamic System: DC Motor'. This WebLab is used in the Industrial Automation course that is included in several Industrial Engineering degrees. © 2014 IEEE.

关键词： Laboratories

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Embedding visually recognizable watermarks into digital audio signals 6

Embedding visually recognizable watermarks into digital audi...

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6th International Conference on Spoken Language Processing, ICSLP 2000

作者： Wang, Chengfa Wang, Qiusheng Dept. of Computer Science and Engineering Harbin Institute of Technology Harbin150001 China Dept. of Automatic Measurement and Control Harbin Institute of Technology Harbin150001 China

ISBN: (纸本)7801501144

This paper presents a novel watermarking technique for digital audio signals. A visually recognizable binary image served as a watermark is embedded into an audio signal in discrete cosine transform domain. In order to enhance robustness and make good use of masking characteristics of the audio signal, the techniques of pseudo-random permutation and energy-based permutation are used during watermarking. The experimental results show that the proposed watermarking technique is robust to several signal manipulations, such as filtering, compression, and so on.

关键词： Binary images

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Hardware implementation on FPGA of two modulation techniques for three phase inverters

Hardware implementation on FPGA of two modulation techniques...

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2013 IEEE 9th International Conference on Intelligent computer Communication and Processing, ICCP 2013

作者： Alecsa, B. Onea, A. Dept. of Automatic Control and Computer Engineering Technical University of Iaşi Iaşi Romania

ISBN: (纸本)9781479914937

This paper presents two modern modulation techniques applied to three phase inverters from a hardware implementation point of view. The considered techniques are the sinusoidal pulse width modulation with zero sequence injection and the space vector modulation. Both these techniques conduct to the same result regarding supply voltage usage efficiency and harmonic content of the resulted signals. The implementation was developed in Matlab-Simulink using the System Generator software, and validated through simulation. Both the modulation algorithms were implemented in hardware on a low cost FPGA, and the resulted designs are compared for resource usage efficiency, obtained speed and easiness of integration within a complex AC drive control system. © 2013 IEEE.

关键词： Pulse width modulation

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Towards a new generation of intelligent manufacturing systems

Towards a new generation of intelligent manufacturing system...

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2008 4th International IEEE Conference Intelligent Systems, IS 2008

作者： Dumitrache, Loan Caramihai, Simona I. Politehnica University of Bucharest Dept. of Automatic Control and Computer Science 313 Sp1aiu1 Independentei Bucharest Romania

ISBN: (纸本)9781424417391

The paper intends to present a modeling philosophy, that allows a global view of a generic manufacturing enterprise behavior, combining managerial and control approaches. The main objective of the assessment is to design a System Architecture for Manufacturing that will be able to develop an intelligent comportment displaying characteristics like environment adaptability, problem solving and learning from experience. The foundations of this approach are mainly knowledge management and control engineering techniques, as well as agent-based architectures. © 2008 IEEE.

关键词： Knowledge management

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64 bands hybrid noise reduction and feedback cancellation algorithm for hearing aid

International Journal of Control and Automation

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International Journal of control and Automation 2014年第1期7卷 427-436页

作者： Jarng, Soon-Suck Swanson, Carl Lee, Frank Zou, Joseph Chosun University Dept. of Control and Instrumentation Robotics Korea Republic of University of Guam Faculty of Computer Science Guam

Both chronic problems of hearing aid have been solved by a probabilistic signal processing algorithm. The algorithm was implemented into a low and single voltage and low power dsp ic chip which can be used as a hybrid of the hearing aid. Both simulated and experimented results show clear noise reduction as well as feedback cancellation. The computational capacity of the physical chip was practically discussed for the limit of the algorithm. © 2014 SERSC.

关键词： Speech enhancement

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